Ink jet print apparatus, ink jet printing method, program, and computer-readable storage medium that stores the program

An ink jet printing method wherein printing is performed in any one of a bidirectional printing mode in which printing is performed on a print medium by both a main scan in an advance direction and a main scan in a return direction of print heads for discharging a plurality of different kinds of inks, and a unidirectional printing mode in which printing is performed on the print medium by either the main scan in the advance direction or that in the return direction of the print heads, the method comprising the steps of:

• acquiring, based on print data corresponding to a predetermined area on the print medium, information of respective ink amounts to be imparted to the predetermined area for the plurality of different kinds of inks;
• and
• determining, based on the information acquired by the acquiring means, whether the respective imparting amounts of the plurality of different kinds of inks exceed respective predetermined amounts that have been predetermined corresponding to the respective inks,
• wherein, in the determining step:
• (a) when it is determined that the respective imparting amounts of all of the plurality of different kinds of inks exceed the respective predetermined amounts, printing with respect to the predetermined area is performed in the unidirectional print mode;
• and
• (b) when it is determined that the determining means determines that at least one of the respective imparting amounts of the plurality of different kinds of inks does not exceed the predetermined amount thereof, printing with respect to the predetermined area is performed in the bidirectional print mode.

A control program for controlling an ink jet print apparatus that performs printing on a print medium using print heads for discharging a plurality of different kinds of inks, the program comprising the steps of:

• acquiring, based on print data corresponding to a predetermined area on the print medium, information of respective ink amounts to be imparted to the predetermined area for the plurality of different kinds of inks;
• and
• determining, based on the information acquired by the acquiring means, whether the respective imparting amounts of the plurality of different kinds of inks exceed respective predetermined amounts that have been predetermined corresponding to the respective inks,
• wherein, in the determining step:
• (a) when it is determined that the respective imparting amounts of all of the plurality of different kinds of inks exceed the respective predetermined amounts, a unidirectional print mode, wherein printing is performed by either a main scan in an advance direction or a main scan in a return direction of the print heads, is selected;
• and
• (b) when it is determined that at least one of the respective imparting amounts of the plurality of different kinds of inks does not exceed the predetermined amount thereof, a bidirectional print mode, wherein printing is performed by both the main scan in the advance direction and the main scan in the return direction of the print heads, is selected.

An ink jet printing method wherein printing is performed in any one of a bidirectional printing mode in which printing is performed on a print medium by both a main scan in an advance direction and a main scan in a return direction of print heads for discharging a plurality of different kinds of inks, and a unidirectional printing mode in which printing is performed on the print medium by one of the main scan in the advance direction and the main scan in the return direction of the print heads, the method comprising the steps of:

• acquiring, based on print data corresponding to the predetermined area on the print medium, information of respective ink amounts to be imparted to the predetermined area for the plurality of different kinds of inks;
• determining, based on the information acquired by the acquiring means, whether the respective imparting amounts of the plurality of different kinds of inks exceed respective predetermined amounts that have been predetermined corresponding to the respective inks;
• and
• switching a print mode to be used from the bidirectional print mode to the unidirectional print mode when, in the determining step, it is determined that the respective imparting amounts of all of the plurality of different kinds of inks exceed the respective predetermined amounts.